Pith Number

pith:GRCNKHPK

pith:2006:GRCNKHPK2SZAGI6V5MXMXMYGMM

not attested not anchored not stored refs pending

The optical and near-infrared properties of nearby groups of galaxies

Somak Raychaudhury, Trevor A. Miles (University of Birmingham, UK)

arxiv:astro-ph/0609058 v1 · 2006-09-02 · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:40:29.798152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3444d51dead4b20323d5eb2ecbb306630f50f7f211e8837968e3103b987a61ed

Aliases

arxiv: astro-ph/0609058 · arxiv_version: astro-ph/0609058v1 · doi: 10.48550/arxiv.astro-ph/0609058 · pith_short_12: GRCNKHPK2SZA · pith_short_16: GRCNKHPK2SZAGI6V · pith_short_8: GRCNKHPK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GRCNKHPK2SZAGI6V5MXMXMYGMM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3444d51dead4b20323d5eb2ecbb306630f50f7f211e8837968e3103b987a61ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5cd82bdb4e8516c75188f7c005ec52d1cacfdad784cc9f56bfaf8d02764c951",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-02T22:22:51Z",
    "title_canon_sha256": "53d22ffd3cb8b3bbb9a91345edee57224e7b06aa101e0f2977e7c2518a6b6b84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609058",
    "kind": "arxiv",
    "version": 1
  }
}